202012211212127 has 2 divisors, whose sum is σ = 202012211212128. Its totient is φ = 202012211212126.

The previous prime is 202012211212121. The next prime is 202012211212139. The reversal of 202012211212127 is 721212112210202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202012211212127 - 2⁸ = 202012211211871 is a prime.

It is a super-2 number, since 2×202012211212127² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202012211212096 and 202012211212105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202012211212121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006105606063 + 101006105606064.

It is an arithmetic number, because the mean of its divisors is an integer number (101006105606064).

Almost surely, 2^{202012211212127} is an apocalyptic number.

202012211212127 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012211212127 is an equidigital number, since it uses as much as digits as its factorization.

202012211212127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 202012211212127 its reverse (721212112210202), we get a palindrome (923224323422329).

The spelling of 202012211212127 in words is "two hundred two trillion, twelve billion, two hundred eleven million, two hundred twelve thousand, one hundred twenty-seven".